submissions?

My band and I all love Critical Role, Felicia Day and everything Geek and Sundry. We noticed you guys have your Twitch hang, "Gather Your Party" and we were wondering if we could get involved somehow (perhaps play a song on your show or do something D&D/MTG/geek related?) Our (equally geeky) fans would probably die if we had a chance to participate! Any place specific to submit our music and stuffs? xoxo SJ

PS (our band/friends have a D&D campaign going and we call ourselves the "Au Naturales"...because, in spookylike fashion, we never fail to roll crit fails or wins when it really matters. )